Corrosion resistant structure and corrosion protection method in high-temperature water system

摘要

Provided are a corrosion resistant structure and a corrosion protection method in a high-temperature water system that make it possible to run a plant without controlling cooling water quality by the injection of chemicals. The corrosion resistant structure in a high-temperature water system for passing high-temperature cooling water (4) is characterized in that a corrosion protection film (3) formed of a material containing at least one of La and Y is attached to a surface of a structural material (1) constituting the high-temperature water system, the surface being on the side contacting the cooling water (4).